LONDON, Sept 24 (Reuters) - The U.S.-China trade war dented European stocks on Monday after tariffs from the world’s biggest economies came into force and China cancelled planned talks, triggering new fears of a protracted, costly trade dispute.

“There’s potential for this to be a relatively protracted period of uncertainty given that it seems unlikely you’re going to come to a quick conclusion where both sides are happy,” said Mike Bell, global market strategist at JP Morgan Asset Management.

Carmakers BMW Daimler and car parts maker Valeo were the top fallers on the DAX and the CAC 40 respectively.

Dealmaking drove the greatest moves across sectors, with Europe’s biggest pay-TV group Sky soaring after Comcast’s offer won an auction for the company.